Positive displacement principle
Multipette ® M4 Multipette ® E3 / E3x Biomaster ® 4830 Varipette ® 4720 Varispenser ® 2/2x
Eppendorf
Top Buret™
Titration of
aqueous liquids
Contamination-free
dispensing (up to
100 steps per
Combitip filling) of
aqueous, viscous and
volatile liquids
Dispenser Contamination-free
dispensing (up to
100 steps per
Combitip filling) of
aqueous, viscous and
volatile liquids
Dispenser Pipetting of aqueous,
viscose and
volatile liquids Contamination-free
pipetting of aqueous,
viscose and
volatile liquids Single stroke
dispensing of lyes,
acids, bases, aqueous
liquids or solvents Pipette Pipette Bottletop dispenser Bottletop burette
Mechanical Electronic Mechanical Mechanical Electronic
Positive displacement Positive displacement Mechanical,
combined control
button and ejector
Positive displacement Positive displacement Positive displacement
Time savings for
serial dispensing and
high accuracy for
problem liquids Reduced strain for
long dispensing
series and highest
volume flexibility Contamination-free
pipetting Positive displacement
and air-cushion
Pipetting with
reduced outside
fault effects Safe and easy
dispensing of liquids
without compromise Continuous
and plus-free
manual titration
1 μL–10 mL 1 μL–50 mL 1–20 μL 1–10 mL 0.2–100 mL 0.1–999.9 mL
1-channel 1-channel 1-channel 1-channel 1-channel 1-channel
Yes
(read option) Yes
(read & write option) No No No No
No No Yes No Yes No
Combitips advanced ® Combitips advanced ® Mastertip Eppendorf Varitips – –
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ppendorf Quality™ > > Eppendorf Quality™ – –
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Positive displacement principle
Sample liquid is aspirated into a tip in direct contact with the integrated piston. This system is independent from an air cushion.
This offers the advantage of accurate dispensing of liquids regardless of density, viscosity, and volatility.